Wheel-gearing for transmission of power.



No. 685,503. Patented Oct. 29, mm. a. s. BAKER.

WHEEL GEARING FOR TRANSMISSION OF POWER.

(Application filed June 10, 1901. (No Model.) 6 Sheets-Sheet l.

140 635,503. Patented 0ct.,29, mm.

a. s. BAKER. WHEEL BEARING FOR TRANSMISSION OF POWER.

7 [Application filed June 10, 1901.)

(No Model.) 6 Sheets-Sheet 2.

No. 685,503. Patented Oct. 29, l90l.

G. S. BAKER. WHEEL GEARING FDR TRANSMISSION OF POWER.

(Application filed June 10, 1901.)

6 Sheets$heet 3.

No. 685,503 Patented Oct. 29, l90l.

. a. s. BAKER.

WHEELGEARING FOB TRANSMISSION OF POWER.

I (Applicq-tion filed June 10, 1901.) (No Model.) 6 Sheets-Sheet 4.

YHE nonms PETER! ca, PnoYo-uma, WASHINGTON. 04 c.

No. 685,503. Pafented Oct. 29, I90I.

G. S. BAKER.

WHEEL GEARING FOR TRANSMISSION OF POWER.

(Application filed June 10, 1901.) (No Model.) 6 Sheets-Sheet 5.

Tu: Norms FTERB cu. PHoro-Lrma. wmmcnon. n. c.

u 685,503. Patented Dot. 29, mm.

I s. s. BAKER. WHEEL BEARING FOR TRANSMISSION OF POWER.

. (Application filed June 10, 1901.) (No Model.) 6 Sheets-Sheet 6.

1m: Ndnms PETERS 00., mam-mm wmmamu, n. c

UNITED STAT-Es PATENT OFFICE.

GEORGE SAMUEBBAKER, OF LONDON, ENGLAND.

WHEEL-GEARING FOR TRANSMISSION OF POWER.

SPECIFICATION forming part of Letters Patent No. 685,503, dated October29, 1901.

Application filed June ,190l. Serial No. 63,972. (No model.) i

To all whom it may concern: I

Be it known that I, GEORGE SAMUEL BAKER, a subject of the King ofEngland, residing at London, England, have invented certain new anduseful Wheel-Gearing'for the Transmission of Power, (for whichapplication has been madein Great Britain under N0. 10,325,dated June 5,1900,) of which the following is a specification.

10 This invention relates to wheel-gearing for ployment in the gearcomprising such compound pinions ofa friction-pulley so arranged andoperated as to serve as a starting and stopping device for the gear.

A further objectis the combination, with a gear in which compoundpinions are used, of a pair of rotatable rings'and a locking devicewhereby one or the other of those rings, or both of them, can be rapidlyreleased or either of them locked to enable reversal of the part drivento be effected with much facility.

An advantage peculiar to the compound pinions employed in the mannerhereinafter described is that of their two elements. The frictional oneis employed to receive the power in the high-speed portion of the gear,where the stress at the periphery is at any instant slight, whereas thetoothed element is used where the transmission is slower and whereconsequently the peripheral stresses are higher.

In one construction of gear according to this invention a high-speedshaft has upon it a friction-pinion. This pinion gears with otherfriction-pinions which are disposed aboutit and are of the compound typewhich is above referred to. Encircling these compound pinions are tworings, one of them a frictionring and the other an internally-toothedring. \Vith the friction-ring the friction elements of the compoundpinions gear. Vlfith the toothed ring the toothed elements of thecompound pinions gear. If the toothed ring be stationary,'thefriction-ring will be revolved tation the reverse of that in which thefric-- tion-ring previously turned. The compound pinions can be carriedon a frame which may either be fixed and stationary ormay be a floatingframe rotatable concentrically with the high-speed shaft. It ispreferred that a duplex locking device, which may consist of a rockinglever, with a braking or boltingdevice at each end, or may be of anyother construetion, should be applied to the two rings and that theserings should both be in operative connection with the part that has, tobe driven; also, the frameaforesaidshould preferably be a floatingframe; Under such circumstances the part driven can have its directionof motion reversed by operation of the duplex brake to hold one or otherof the rings,

or if both the rings be released by the duplex brake the high-speedshaft, though still run ning, will not rotate the driven part. nativelyeither one of the two rings could be connected to the part driven. Insuch case the frame must be capable of rotation and proyided with abraking or locking device. By looking the frame the power would betransmitted through the compound pinions to the chosen ring directly. Byreleasing the frame and holding one ring the companion ring would berotated by the differential action of the compound pinions upon the ringheld.

The starting and stopping device hereinbefore referred to canconveniently be arranged as follows, it being promised that to permit ofits employment therings aforesaid must be slightly eccentric to the axisof the high-speed first-motion shaft: The" starting friction-pulley issupported in such a manner as to be adjustable in the space between thefriction-ring and the friction-pulley on the high-speed shaft. Thisspace by-re'ason of the eccentricity of the high-speed'shaft is ofvarying width, so that by moving the starting-pulley around that shaftin contact with the ring it can be caused to press against or Alterrecede from the high-speed pulley. It may be adjustably mounted upon thefloating frame aforesaid. By forcing the startingpulley into thediminishing space around the high-speed shaft a frictional grip is setup not only between it and that shaft, but between the companioncompound pulleys and the surfaces with which they cooperate, thesecompound pulleys being allowed for this purpose a slight amount ofslack. The compound pulleys might be duplexthat is to say, thefrictional portions of each might be duplicated and coaxial, having thetoothed element between them. This conduces to the prevention of anytendency of the working parts to slue or bind. Further,two toothedelements of different diameters might be used, gearing withcorresponding and separate toothed rings. The floating frame preferablypossesses twin portions so disposed that the pulleys or pinions itcarries lie between those parts and are squarely held.

The friction starting device hereinbefore referred to can be providedwith a spring tending to keep it always in gear and with a device whichcan be operated to hold it out of gear. This latter is advantageous incases wherein itis sometimes desirable to let the first-motion shaft runfreely before allowing it to start the gear.

In the gear wherein the duplex brake is used the compound pulleys orpinions might have toothed portions of different diameters instead oftoothed and frictional portions of different diameters, the rings insuch a case being also all toothed.

In the accompanying drawings, Figure 1 is a longitudinal verticalsection of one construction of the improved speed-gear. Fig. 2 is atransverse vertical section on the line 22 of Fig. 1. Fig. 3 is alongitudinal vertical section of another construction of speedgear, alsoaccording to this invention. Fig. 4. is a side elevation, partly insection, on the line 4: 4 of Fig. 3; and Figs. 5 and 6 are respectivelyan elevation and a transverse section of a floating frame forming aportion of the construction illustrated in Figs. 3 and 4.

Like letters indicate like parts throughout the drawings.

WVith reference first to Figs. 1 and 2, a highspeed shaft A has keyedupon it a frictionpinion B, which gears with other friction-pinionswhich are disposed about it and each of which comprises a frictiondriving-surface O and toothed portion D. These compound pinions aremounted on spindles E, which are carried on a floating frame comprisingtwo portions F and F, which are connected by the portions F between thepinions. E11- circling these compound pinions and gearing therewith aretwo rings, one of them a friction-ring G, gearing with the frictiondrivingsurfaces 0 of the pinions, and the other an internally-toothedring H, gearing with the toothed portions D of the pinions. The floatingframe F F F is so constructed that it forms the bearing of thedriving-shaft A and at the same time contains the bearings for thespindles E. It thus serves continuously to keep the compound pinions intheir proper positions relatively to the driving-shaft. J and K aredisks or supports attached to the rings G and II, respectively, wherebyeither of these rings may be clamped to a casing L by means oflockingzdevices M and M. If desired, the locking device maybe made du=plex by the use of a spindle, with worm-screws gearing with worm-wheelson the spindles 1W, or by other-suitable method,whereby the lookingdevices M and M mayalternativelybe put into or out of action by turningone handle. The disk J terminates in a hollow shaft J, and the disk K iskeyed through the collar K to a shaft N, on each of which shafts apulley or equivalent may be mounted for connecting the gear to themachine which is to be driven. Bearings J K are provided for the frameJK, with any suitable lubricators. By prolonging the floating frame Fbeyond the hollowshaft J the frame might be locked by any suitable clampto the casing, and in this case the power would be transmitted directlythrough the pinions O D to the ring H and through the disk K to theshaft N. By locking the ring G through the frame J by the locking deviceM the ring H will be rotated by the differential action of the compoundpinions, and the power will thus be transmitted at reduced speed throughframe K to shaft N. By releasing the ring G and locking the ring Hthrough the disk K by the locking device M the ring G will be rotated bythe differential action of the compound pinions in the oppositedirection to the previous rotation of the ring H, and the power willthus be transmitted at reduced speed through the disk J to the hollowshaft J. Thus by the use of the locking devices M and and M reducedspeed in opposite directions may be alternatively obtained from theshafts N and J. Another duplex locking device for the rings G H may beconstructed by removing the cover 0 of the casing L and substitutingtherefor a double clamping-ring, whereby either of the rings G H may bdirectly locked to the casing, the action of the reducing-gear remainingthe same.

In the construction shown in Figs. 3 and the driving-pinion B istoothed. The compound pinions O D have toothed portions of differentdiameters instead of toothed and frictional portions of differentdiameters, the rings G H being both internally toothed. The clampingdevice M is shown only at one end, the frame at the other end having abearing K This construction is used when the power is always to be takenfrom the shaft N. When reversed motion is desired, the bearing K isreplaced by a clamp-bearing. The action of this construction of gearhaving compound toothed pinions is substantially the same as thathereinbefore described with reference to the form having pinions withfriction driving-surfaces.

Figs. 3 and 4: show a method of keeping all the journals thoroughlylubricated. The circulation of oil is maintained by the floating i thefloating frame revolves, a supply of oil being contained in thecasing-L. From the central portion of the floating frame the oil isforced through the various oil-holes to the interior of the centralbearings, thus providing a forced lubrication.

In Fig. 2 the ring G is shown slightly eccentric to the axis of theshaft A. A friction-pulley G is supported on a spindle E in the floatingframe and can be adjusted in the space between the friction-ring G andthe friction-pulley B. This space by reason of the eccentricity ofthe-ring G is of varying width, so that when the friction-pinion Brevolves the pulley C will be caused to press against or recede from thefriction-ring G. The position of the pulley O is controlled by a springQ, connected to the floating frame F and in contact with the pulley O,tending to keep it always in gear. The pulley O by pressing in betweenthe pinion B and the ring G brings the friction-surfaces G into gearwith the ring G.

When the eccentric starting device is employed, the ring G is connectedto the disk J by a projection moving in a radial slot in the disk, asshown in Fig. 1, in order that the eccentric ring may run successivelyover the friction-pinions when the ring acts as the driven member of thecombination.

In the construction illustrated the frame F is quite free to revolve andacts as a floating frame. The advantage of a floating frame comprisingtwo portions, one supporting each end of the pinion-spindles, is thatthe pinions are kept quite true, all twisting action and centrifugalaction on the pinions being taken up by the frame. If desired, thespindles E may be carried on roller-bearings in the floating frame.

Instead of mounting pulleys on the shafts N and J friction-clutches maybe employed to connect the gear to the machine which is to be driven.

In the constructions illustrated only compound pinions having twoportions are shown; but obviously there might be more than two portionswith corresponding rings.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a speed-gear the combination of a highspeed shaft, a pinion keyedthereon, a compound pinion gearing therewith, a rotatable support forthe compound pinion, a plurality of rotatable rings each encircling andgearing with one element of the compound pinion, outside shafts andmeans for connect-ing each rotatable ring to one of the said outsideshafts and means for locking each ring.

2. In a speed-gear the combination of a highspeed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having a frictionelement gearing with the driving-pinion, a rotatable support for thecompound pinion, a

plurality of rotatable rings each encircling and gearing with oneelement of the compound pinion, outside shafts, means for connectingeach rotatable ring to one of the said outside shafts and means forlocking each ring.

3. In a speed-gear,the combination ofa highspeed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having one frictionelement gearing with the driving-pinion,

ble ring to one of said outside shafts, means for v locking each ring, afriction-pulley and means for pressing said friction-pulley between thedriving-pinion and the eccentric ring.

4. In a speed-gear the combination of a high speed shaft, a frictiondriving-pinion keyed thereon, acompound pinion having one frictionelement gearing with the driving-pinion, a rotatable support for thecompound pinion, a plurality of rotatable rings each encircling andgearing with one element of the compound pinion, the friction-ring beingeccentric, outside shafts, means for connecting each rotatable ring toone of the said outside shafts, means for locking each ring, a friction'pulley, means for pressing the friction-pulley between thedriving-pinion and the eccentric ring, means for automtically conveyingoil to the journals of the compound pinions, and means for preventingthe compound pinion from rotating around the driving-shaft.

5. In a speed-gear the combination of ahighspeed shaft, a frictiondriving-pinion keyed thereon, a compound'pinion having one frictionelement gearing With the driving-pinion, a rotatable support for thecompound pinion, a plurality of rotatable rings each encircling andgearing with one element of the compound pinion the friction-ring beingeccentric, outside shafts, means for connecting each rotatable ring toone of said outside shafts, means forlocking each ring, afriction-pulley, means for pressing said friction-pulley between thedriving-pinion and the eccentric ring, means for automatically conveyingoil to the journals of the compound pinions, and means for preventingthe compound pinion from rotating around the driving-shaft.

6. In a speed-gear the combination of a highspeed shaft, 'a pinion keyedthereon, a compound pinion gearing therewith, a rotatable support forthe compound pinion, a plurality of rotatable rings each encircling andgearing with one element of the compoundpinion, means for automaticallyconveying oil to the journals of the compound pinions, outsideshafts,.means for connecting each rotatable ring to one of said outsideshafts and means for locking each ring.

7. In a speed-gear the combination of a highspeed shaft, a pinion gearedthereon, a compound pinion gearing therewith, a rotatable support forthe compound pinion in the form of a floating frame comprising twoconnected portions which support the ends of the spindle of the compoundpinion, a plurality of rotatable rings each encircling and gearing withone element of the compound pinion, outside shafts, a connection fromeach ring to one of said outside shafts and a clamp on each shaft.

8. In a speed-gear the combination of a highspeed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having a frictionelement gearing with the driving-pinion, a rotatable support for thecompound pinion in the form of a floating frame comprising two connectedportions which support the ends of the spindle of the compound pinion, aplurality of rotatable rings each encircling and gearing with oneelement of the compound pinion, hollow shafts, a disk attached to eachrotatable ring and each connected to one of said hollow shafts and aclamp on each shaft.

9. Infa speed-gear the combination of a highspeed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having a frictionelement gearing with the driving-pinion, a rotatable support for thecompound pinion in the form of a floating frame comprising two connectedportions which support the ends of the spindle of the compound pinion, aplurality of rotatable rings each encircling and gearing with oneelement of the compound pinion, hollow shafts, a disk attached to eachrotatable ring and each connected to one of said hollow shafts, ascrew-clamp on each hollow shaft, and means for operating the saidclamps.

10. In a speed-gear the combination of a high-speed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having a frictionelement gearing with the driving-pinion, a rotatable support for thecompound pinion in the form of a floating frame comprising two connectedportions which support the ends of the spindle of the compound pinion, aplurality of rotatable rings each encircling and gearing with oneelement of the compound pinion, the friction-ring being eccentric,hollow shafts, a disk attached to each rotatable ring and each connectedto one of said hollow shafts, means for operating the clamps and aspring-controlled friction-pinion between the driving-pinion and thecocentric friction-ring.

11. In a speed-gear the combination of a high-speed shaft, a frictiondrivinginion keyed thereon, a compound pinion having a friction elementgearing with the drivingpinion, a rotatable support for the compoundpinion in the form of a floating frame comprising two connected portionswhich support the ends of the spindle of the compound pinion, aplurality of rotatable rings each encircling and gearing with oneelement of the compound pinion, the friction-ring being eccentric,hollow shafts, a disk attached to each rotatable ring and each connectedto one of said hollow shafts, a clamp on the hollow shaft, means foroperating the clamps, a spring-controlled friction-pinion between thedrivingpinion and the eccentric frictionring, and centripetallubricating-grooves on the sides of the floating frame.

12. In a speed-gear the combination of a high-speed shaft, a frictiondriving-pinion keyed thereon, a compound pinion having a frictionelement gearing with the drivingpinion, a rotatable support for thecompound pinion in the form of a floating frame comprising two connectedportions which support the ends of the spindle of the compound pinion, aplurality of rotata ble rings each cncircling and gearing with oneelement of the compound pinion, the friction-ring being eccentric,hollow shafts, adisk attached to each rotatable ring and each connectedto one of said hollow shafts, means for operating the clamps, aspring-controlled friction-pinion between the driving-pinion and theeccentric friction-ring, centripetal lubricating-grooves on the sides ofthe floating frame and a clamp for the floating frame.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE SAMUEL BAKER.

WVitnesses:

ARTHUR J. Pnrncn, WILLIAM C. HALE.

